#include<iostream>
#include<iomanip>
#include<cmath>
using namespace std;

int main()                  //一元二次方程问题
{
    double a,b,c;
    cin >> a >> b >> c;
    double Δ = b*b-4*a*c;
    double x1 = (-b+sqrt(b*b-4*a*c))/(2*a),x2 = (-b-sqrt(b*b-4*a*c))/(2*a);
    if(Δ>0)
    {
        if(a>0)
        {   
            cout << "x1=" << fixed << setprecision(5) << x2 << ";" << "x2=" << fixed << setprecision(5) << x1 << endl;
        }
        else
        {
            cout << "x1=" << fixed << setprecision(5) << x1 << ";" << "x2=" << fixed << setprecision(5) << x2 << endl;
        }
    }
    else if(Δ==0)
    {
        cout << "x1=x2=" << fixed << setprecision(5) << x1 << endl;
    }
    else
    {
        cout << "No answer!" << endl;
    }
    return 0;
}